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CVE-2019-15316

CVE-2019-15316

EPSS 0.4%
Valve Steam Client for Windows through 2019-08-20 has weak folder permissions, leading to privilege escalation (to NT AUTHORITY\SYSTEM) via crafted use of CreateMountPoint.exe and SetOpLock.exe to leverage a TOCTOU race condition.
Affected products
n/a · n/a

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References
https://amonitoring.ru/article/onemore_steam_eop_0day/https://habr.com/ru/company/pm/blog/464367/https://www.youtube.com/watch?v=I93aH86BUaEhttps://www.youtube.com/watch?v=ZCHrjP0cMew